Portable drilling rig



Oct. 6, 1925..

- W. R. HAMILTON PORTABLE DRILLING RIG 2 Sheets-Sheet 1 Filed Jan. 30, 1923 l l I I 222 Oct. 6

W. R. HAMILTON PORTABLE DRILLING RIG Filed Jan. 30, 1923 2 Sheets-Sheet 2 M/VTOR: VV/LLMM 1 Mauro/s5 BY W M flrromvzicsr UNITED STA ES PATENT OFFICE.

WILLIAM It. HAMILTON, 0] LOS ANGELES,

PORTABLE DBILLHG 316.

To all whom it may concern:

Be it known that I, WILLIAM R. HAMIL- TON, a citizen of the at Los Angeles, in the geles,

United States,

State of California, new and useful Portable residing county of Los nhave invented a Drilling Rig, of

which the following is a specification.

My invention relates to portable well drilling equipment and it is an object thereof to provide an improved form of portable drilling rig combining and rotary equipment. It is an ob ect of ticularly suitable to It is a further ob ect both reciprocating the invention to provide an equipment of this character WhlOll 1s parprospecting work.

of the invention to provide a simplified form of driving gear from which either the rotary or the reciproeating equipment may driven.

It is also a be interchangeably further object of the invention to provide a portable equipment in which the high degree of efliclenoy attained in stationary equipment may be attained.

. A further object of provide a framework the invention is to for supporting the cable drums of the equipment which also serves as a truss for reinforcing the framework of the vehicle mounting the equipment.

A still further object which the walking provide a devlce of beam will not interfere of the invention is this character in hereinafter.

Referring to the drawings, which are for illustrative purposes only,

Fig. 1 is an elevation drilling rig embodying invention.

view the features of my Fig. 2 is a plan view corresponding to Fig. 1. Fig.

'3 is a fragmentary sectional view taken upon a plane represented by the line 3-3 of Fig. 2.

As shown =hicle 11 comprised of a 12, mounted upon front wheels 15. An axle- 1 in the drawing,

I provide a vechannel iron frame wheels 14 andrear 6, upon which the hereinafter fully of a portable CALIFORNIA.

lication filed January 80, 1823. Serial No. 615,800.

front wheels 14 are mounted, is pivoted upon a ldng pin 17 so that the front wheels may be turned in either direction to steer the vehicle when same is drawn b attachin a draft linkvto a clevis 18 attac ed centra ly to the axle 16. I

Upon the forward end 19 of the vehicle, I mount a rotary table 20. This table 20 is so mounted that the center of rotation thereof is dis osed somewhat to the ri ht of the center 0 the vehicle and is driven y a bevel pinion 21 mounted upon a shaft 22' carrying a s rocket 23 which is turnable upon the sha 22 and is brought into driving relationshi therewith by means of a clutch 24 adapt to be operatedb a handle 25. The placing of the rotary tab e so that the center of rotation thereof is'somewhat to the side contributes ve materially to the interchangeability o the equipment from rotary action to reciprocatory action as will be explained.

Near the center of the vehicle, I' mount a 'ack frame 27 which is adapted to carry a ack shaft 28, a main cable drum 29, and a sand reel 30. This jack frame 27 employs pairs of channel members 32 mounted upon side channels 33 of the vehicle, these channel members 32 being diagonally inclined so as to form an apex 34 at which pillow blocks 35, for sqpporting the jack shaft 28, are mounted. etween a plate 36 riveted at the. apex.34 and an attachment member 37 mounted upon the side channels 33 there extends a truss bar 39 provided with a turn buckle so that an upward pull may be exerted at the center of each of the side channels to truss them a ainst flexure under the load being supporte Forwardly upon the jack frame, blocks 41 are mounted for carrying a shaft 42 upon which the main drum 29 is mounted. Upon the extending ends 43 and '44 of the shaft 42, a large sprocket 45 and a small sprocket 46 are respectively mounted and provided with jaw clutches 47 and 48 for brlnging either of the sprockets into driving engagement with the shaft 42. Rearwardly upon the jack frame 27 blocks 50 are mounted for carrying a shaft 51 which supports the sand reel 30. Upon the end 52 of the shaft 53 and 54 are keyed. The sand reel 30 is 51, sprockets- 5 as indicated by the dotted lines 83 in Fig. 2,

'so that the forward end 84. of the walking merit, a motive devicegs'uchas an engine 58;v is mounted upon the vehicle and is adapted to drive a oountershaft 60 through a chain 61 running-over'sprockets 62 and63. ;,The outwardly extending end 64 of the shaft 60 has a sprocket 65 mounted thereupon which.

drives the shaft 52 by means of a chain 66 which runs over the'sprocket "54. At the rear end 68 of the vehicle ashaft 69 is extended across the channel members-33' and.

extends oversprocket 54 mounted upon the has a pulley 70 mounted upon one end 71 thereof anda crank 72 mounted upon the opposite end. The crank 72- is provided 'with a'crankpin 73 which is adapted to be placed in one of the holes 74 and the effec- Ttive lengths of the crank thereby adjusted.

. Near. the center and upon the same'side of the vehicle as the center of rotation of the table a jack post 75, builtup of latticed angle members 76 and su portedin an erect position by truss bars 7 is mounted and supports upon a special center iron 78 a walking beam 79. Center iron 78 is pro-' vided with 'a, horizontally disposed pivot 80 which permits the walking beam to be vertically. reciprocated and is further provided" [with a pairvof co-acting plates 81 which are" placed flat upon the top of the jack post and I provide a means whereby the walking beam and a drive '79 may be swung through 'a horizontal plane,

beam will be out of the way when it is desired to raise or lower tubing or casing in the well being drilled. The walking beam 79, being situated at the side of the hoisting equipment, does not interfere with the use of any of the drums. It will be perceived that whenthe forward end 84 of the walking beam 79 is over the center of the rotary table 20 the rear end 85 thereof is in alinement withthe crank 72 so that it may be reciprocatedby means of a connecting rod 87 which at its lower end works upon the pin 73 and has its-upper end pillowed in a box 88 mounted upon the walking beam, as shown in Fig. 1. The crank 7 2 is driven by means of a belt 89 which operates over the pulley pulley 90 mounted upon the jack shaft 28.

'A derrick 92, provided at its upper end with a crown block 93, is mounted upon a shaft 94 which extends between pillow blocks 95 mounted forwardly upon the side channels 33. In lowering or raising articles within the hole being drilled, the cable mounted upon the drum 29 is passed over the'crown block 93 so that it maybe lowered directly the crown block 93. The sheave 96 is mounted upon a horizontal shaft 97 which extends between two arms 98 mountedupon the jack frame, and is adapted to slide back and forth upon the shaft 97 that-the. reeling of the cable orsandline upontheir respective drum and reel may be accommodated by a 'correshaft 52." This. shaft is adapted to turn spendingv lateral movement of the sheave 96 upon the shaft 97.

within the 'sand reel 30..and-is inconstant rotation, driving the; jack shaft ;28, through a chain 100 which runs oveiuthe sprocket 53 mounted upon the shaft 52 v and a: sprocket 101 mounted upon the jack shaft) 28 adjacent to a spool 102 which maylbe mounted as shown or which may be transferred to the end 103 of the shaft 28 as conditions may require. It will be perceived that vwhenever the engine isin operation, both the shaft 52 and the jackshaft 28 are-:revolved, and-that when it isdesired to drive the crank 72, belt 89v is placed over the pulleys 70 and 90. The sprockets 45 and 46 which are loosely mountcdupon the shaft 42 are driven'from sprockets104 and 105 keyed upon the jack shaft 29, either the clutch '47 or. the clutch 48 may be brought into engagementdependingupon the power ratio desired. From a sprocket 108 also mounted upon. the jack shaft 28, a chain'109 runs to'the sprocket 23 which is loosely mounted upon the shaft 22 and is adapted to be engaged by theclutch 24 when it is desired to drive the rotary equipment. It is to be understood that. the engine 58 is steam driven; otherwise it would be necessary to provide a clutch in the driving arrangement.

'28. .When itis desired to drivethe drum I In the ap aratus herein described the-rotary and reclprocating equipment are so disposed that one will not interfere with the other. When it is desired'to use the rotary table or to use the derrick, in lifting, the

- walking beam may be swung to the side and in such position be entirely out of the way of any cables, either from the drum 29 or the sand reel 30; but this feature does not interfere with the practical and efiicient driving of the walking beam, as, when the walking beam is in operating position, the rear end thereof is in driving alinement with the crank provided for that purpose. A further feature of the invention resides in the interconnecting drives between the different elements which provide the ,utiliza- I tion of either the rotary table 20, the' main' -drum 29, or the sand reel 30, without having to take down or place driving shafts or I mounted at the forward end of make any .jack shaft; a

driving connection other than'the throwing in of the necessary clutches to pro-- vide the pro tating mem driven.

I claim as my invention:

1. In .a portable drilling rig of the class described, the combination of: a' ey hicle having side frame members; a rotary table mounted at the forward end of said vehicle; a jack frame situated upon said vehicle, jack frame comprising an A bracket mounted upon each of said side frame members, each formed of a pair of inclined legs converging upwardly from said frame members to an apex; a tension member disposed between each apex and a central point on each of said frame members for trussin said frame members; a jack shaft mounte upon said jack frame; means for driving said sprocket mounted near eac end of said jack shaft; a drum shaft having a small sprocket at one end thereof and a large sprocket at the other end thereof, each of said drum shaft sprockets being drivable from one of said jack shaft sprockets; and clutch. means whereby said drum may be driven from said jack shaft through either said large sprocket or said small sprocket.

2. In a portable drilling rig of the class described, the combination of: a vehicle having side frame members; a rotary table mounted at the forward end of said vehicle; a jack frame situated upon said vehicle, said jack frame COIIIPIlSlIlg an A bracket mounted upon each of said side frame members, each formed of a pair of inclined legs converging upwardly from said frame members to an apex; a tension member disposed between each apex and a central point on each of said frame members for trussing said frame members; a sand reel shaft mounted upon said jack frame; a sand reel upon said sand reel shaft; a clutch upon sai sand reel shaft adapted to engage said sand er with the member to be reel; means 'for continuously driving sa1 sand reel shaft; a jack shaft mounted upon said jack frame; means for driving said jack shaft from said sand reel shaft; a s rocket mounted near each end of said jack sliaft;a drum shaft having a small sprocket at one end thereof and a large sprocket at the other end thereof, each of said drum shaft sprockets, being drivable from one of said jack shaft sprockets; and clutch means whereb said drum may be driven from said jack shaft through either said large sprocket or said small sprocket.

3. In a portable drilling rig of the class described, the combination of: a vehicle having side frame members; a rotary table said vehicle; a jack frame situated upon said vehicle, said jack loframe comprising an A bracket mounted upbnea ch of said side frame memer driving engagement of a ro said I jack frame;

converging upwardly from said frame ,members to an apex; a tension member dlsposed between each apex and a central point on each of said frame members for trusslng said frame members; a sand reel shaft mounted upon said lack frame; asand reel upon said sand reel s left; a clutch upon said sand reel shaft adapted to engage said sand reel; means for continuously driving said san reel shaft; a jack shaft'mounted upon said means for driving said shaft from said sand reel shaft; a sprocket mounted near each end ofsaid jack shaft; a drum shaft having a small sprocket at one end thereof and a large sprocket at the other end thereof, each of said drum shaft sprock ets being drivable from one of said jack shaft sprockets; clutch means whereby said drum may be driven from said jack shaft h through either said large sprocket or said small sprocket; a jack post mounted to one side of said jack frame and a walking beam so mounted upon said jack post as to be swingable horizontally to a position with the end thereof in working alignment with the center of said rotary table.

4 In a portable drilling rig of the class described, the combination of: a vehicle having side frame vmembers; a rotary table jackbers, each formed of a pair of inclined legs mounted at the forward end of said vehicle;

a jack frame situated upon said vehicle, said jack frame comprising an A bracket mounted upon each 'of said side frame members, each formed of a pair of inclined legs converging upwardly from said framemembers 'to an apex; a tension member disposedbetween each apex and a said frame members for trussing said frame members; a sand reel shaft mounted upon said jack frame; a sand reel upon said sand reel shaft; aclutch upon said sand .reel shaft adapted to engage said sand reel; means for d continuously driving said sand reel shaft; a

jack shaft mounted u on said jack frame;

d means for driving sai jack shaft from said sand reel shaft; a sprocket mounted neareach end of said jack shaft; a drum shaft having a small s rocket at one end thereof and a large sproc et at the other end thereof, each of said drum shaft sprockets being drivable from one of said jack shaft sprockets; clutch means whereby said drum may be driven from said jack shaft said large sprocket or said small sprocket; a jack post mounted to one side of said jack frame; a walking beam so mounted upon said jack post as to be swin able horizontally to imposition with the end t ereof in working alignment with the centerof said rotary table; upon said vehiclehaving a crownblock upon the upper extremity thereof.

5. In a portable drilling rig of the class described, the combination of: a vehicle havcentral point on each of.

through either and a derrick mounted forwardly ing side f rame members; a rotary table mounted at the forward end of said vehicle; a jack-' framesituated upon. said vehicle, said jack framewomprising an A bracket mounted upon; each of said sidefram'e membersj, each formed of a pair of inclinedvlegst converging upwardlyvfrom said frame members to an"aex; a tension member disposed,

between" eac apex and a central point on each of said frame'members for trussing said frame members-Fa san'd' reel shaft mounted 7 upon said 'ack rame; a sand reel upon said sandieal s aft; aclutch upon said sand reel shaft adapted .to engage saidsand, reel;

means? for continuously driving said sand ets being drivable from one of said jack shaft sprockets"? clutch means whereby said drum may be riven from said jack shaft through either l said large sprocket or said small sprocket; a jack post mounted to one side of said jack frame; a walkin beam mounted upon said jack post as'to' swingable horizontally to a position with the end thereof in working alignment with the center of said rotary table; a. derrick mounted forwardly upon saidfvehicle having a crownblock upon the upper extremity thereof; and a crank for reciprocating said walking beam mounted upon said vehiclein a position of driving alignment with the rear end of said -walkingbeam when said walking beam is in testimonylzvhereof, I have hereunto set my ,hand at s Angeles, California, this 22nd day of January, 1922.

WILLIAM R. HAMILTON.

ali cut with said rotary table. 

